This wireless receiver can widely be used on your computer, laptop, home system and so on with the 3.5mm cable and 3.5mm.to 2RCA cable. It has super portable Audio-streaming power that allows you to this transmitter and receiver into your backpack or laptop bag and take it on-the-go without the slightest effort. Features - Color: Black. - Material: Plastic. - Size: 4.4 x 4.4 x 1.2 cm. - Technologies: BT4.2, A2DP, AVRCP (receiver mode only). - Operation Range: Up to 10m (without any blocking objects). - Charging Time: 2 hours. - Continuous Use Time: 6 hours (Receiver Mode) / 5 hours (Transmitter Mode). - Battery Type: Li-Polymer (200mAh). - Extremely portable, lightweight wireless audio transmitter and receiver is an wireless audio solution for a wide range of situations and uses. - Transmitter mode: wirelessly streams audio from your non- TV, home stereo system, or CD player to your headphones or speakers. - Receiver mode: wirelessly streams audio from your -enabled phone, tablet, or computer to your wired stereo, speakers, or headphones. - Switch between transmitter and receiver modes with the simple flick of a switch. Effortlessly connect using advanced technology and 3.5mm audio cable (included). - Broad Compatibility: With the included 3.5mm cable and 3.5mm to 2RCA cable, this Receiver Transmitter adapter can widely be used on your computer, laptop, home stereo system, headphone, smartphone, Mp3 player, CD player, etc.